ASN Wikibase Occurrence # 365536
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| Date: | Thursday 28 March 1991 |
| Time: | 14:45 LT |
| Type: |  Robinson R-22B |
| Owner/operator: | Heliicopters International |
| Registration: | N8050B |
| MSN: | 1136 |
| Year of manufacture: | 1989 |
| Engine model: | LYCOMING O-320-B2C |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Spring, TX -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Training |
| Departure airport: | Tomball, TX (KDWH) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING A PARTIAL LOSS OF ENGINE POWER DUE TO CARBURETOR ICE, THE PILOT FAILED TO APPLY CARBURETOR HEAT IN AN EFFORT TO REGAIN POWER. DURING THE FORCED LANDING TO A RESIDENTIAL AREA THE STUDENT PILOT DID NOT APPLY APPROPRIATE COLLECTIVE CUSHIONING PITCH RESULTING IN THE HELICOPTER LANDING HARD AS THE TAIL ROTOR AND MAIN ROTOR STRUCK A TREE. TEMPERATURE/DEW POINT WERE 78/67 DEGREES RESPECTIVELY.
Probable Cause: POWER LOSS DUE TO CARBURETOR ICE, THE PILOT'S FAILURE TO USE CARBURETOR HEAT, AND HIS FAILURE TO APPLY ADEQUATE CUSHIONING COLLECTIVE PITCH DURING THE FLARE SEGMENT OF THE AUTOROTATION. A FACTOR IN THE ACCIDENT WAS THE PILOT'S IMPROPER AUTOROTATION TECHNIQUE.
Accident investigation:
 |
|
Sources:
NTSB FTW91LA053
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 20-Mar-2024 11:09 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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